PT-2023-2881 · Frrouting+3 · Frrouting Frr-Bgpd+3

Cjt + 1 · Published 2023-04-03 · Updated 2024-04-03 · CVE-2022-36440

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Frrouting frr-bgpd version 8.3.0

Description A reachable assertion was found in the peek for as4 capability function, which can be exploited by attackers to maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in a denial of service. The issue is related to the insufficient use of the assert() function. This can allow a remote attacker to cause a service disruption.

Recommendations For Frrouting frr-bgpd version 8.3.0, as a temporary workaround, consider disabling the peek for as4 capability function until a patch is available. Restrict access to the BGP peers to minimize the risk of exploitation. Avoid using the vulnerable function in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

ALSA-2023:6434

BDU:2023-02836

CVE-2022-36440

DLA-3573-1

DSA-5495-1

RHSA-2023:6434

RHSA-2023_6434

Affected Products

Almalinux

Frrouting Frr-Bgpd

Red Hat

Red Os

References · 67

• 🔥 https://github.com/spwpun/pocs/blob/main/frr-bgpd.md · Exploit
• 🔥 https://github.com/spwpun/pocs · Exploit
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40318 · Security Note
• https://bdu.fstec.ru/vul/2023-02672 · Security Note
• https://debian.org/security/2023/dsa-5495 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40302 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-31490 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-41361 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-41358 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GM66PNHGCXZU66LQCTP2FSJLFF6CVMSI · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-36440 · Vendor Advisory
• https://errata.almalinux.org/9/ALSA-2023-6434.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-02578 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-41909 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-36440 · Security Note